Problems from Spotify Challenge 2011

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
All Just A Dream 3119 870 28% 0.05 607 470 77% 5.1
Cat Coat Colors 595 235 39% 0.00 207 183 88% 2.9
Imperial Measurement 2649 1098 41% 0.00 1017 938 92% 2.1
Peer Streaming 136 28 21% 0.04 24 17 71% 7.6
Playlist 414 62 15% 0.43 46 20 43% 8.8
Primary Register 1645 1047 64% 0.00 911 848 93% 2.1
Square Pie 522 180 34% 0.07 67 50 75% 7.5
Wheel Game 164 21 13% 0.00 28 16 57% 8.7